Single Point Loadcells: Precise & Reliable Weighing for Industrial Applications
, by Alif Vasaya, 5 min reading time
Single point loadcells deliver precise weight measurement for scales & platforms. Learn how they work, key applications, and industry benefits.
In industries where accuracy and repeatability are non-negotiable, weighing systems depend heavily on the sensors at their core. A small error in weight measurement can disrupt production, create compliance risks, and even increase costs through waste. This is where single point loadcells step in.
Used widely in bench scales, packaging machines, and retail systems, single point loadcells provide stable readings even when loads are not perfectly centered. In this article, we’ll explore how these sensors work, their advantages, applications, and what to consider when selecting the right one for your project.
What Are Single Point Loadcells?
Single point loadcells are a type of strain gauge-based force sensor engineered to measure weight on small to medium platforms. Unlike other loadcell designs, they compensate for off-center loading, meaning weight doesn’t have to be placed directly in the middle of the scale to achieve accurate results.
Key Features
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High Accuracy: Ensures repeatable weight measurements.
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Compact Design: Fits seamlessly into retail and industrial scales.
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Versatility: Works across multiple industries, from food processing to logistics.
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Durability: Resistant to vibration and environmental stress.
Image Example: A stainless steel single point loadcell integrated into a platform scale (alt text: “single point loadcell for platform scale measurement”).
How Do Single Point Loadcells Work?
The principle behind these sensors is straightforward yet highly reliable:
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A strain gauge is bonded to the loadcell body.
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When weight is applied, the body deforms microscopically.
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The strain gauge converts this deformation into an electrical signal.
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The signal is processed by electronics to display an accurate weight.
Because of their geometry and calibration, single point loadcells correct for unevenly distributed loads — a unique benefit compared to compression or shear beam types.
Applications of Single Point Loadcells
Retail & Commercial Scales
Supermarkets and retail checkout counters rely on single point loadcells to weigh items quickly and accurately.
Industrial Bench Scales
Used in assembly lines, warehouses, and laboratories for process control and quality assurance.
Food & Packaging Industry
Portion control is critical in packaged foods. These loadcells ensure compliance with food safety standards while minimizing waste.
Medical Scales
Hospitals and clinics use them for patient weighing, where precision supports better healthcare decisions.
Explore our range of load cells for more options across industries.
Single Point Loadcells vs Other Loadcells
When compared to double-ended shear beams or compression loadcells, single point designs are:
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Better for small platforms (up to ~600 mm x 600 mm).
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Lower in cost since only one sensor is required.
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Easier to install with minimal calibration.
For large industrial weighing systems, however, shear beam or compression loadcells remain more suitable.
Key Considerations When Selecting a Single Point Loadcell
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Capacity: Match the loadcell to your maximum expected load.
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Accuracy Class: Look for OIML or NTEP certifications for trade-approved applications.
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Material: Aluminum loadcells for cost efficiency; stainless steel for harsh environments.
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Sealing & Protection: IP-rated loadcells are essential in dusty or wet conditions.
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FAQs About Single Point Loadcells
Q1. What makes single point loadcells unique?
Their ability to maintain accuracy with off-center loading sets them apart.
Q2. Are they suitable for outdoor applications?
Yes, when built with stainless steel and IP-rated sealing for moisture protection.
Q3. Can single point loadcells be used in dynamic weighing?
They are best for static weighing, but high-quality models can handle light dynamic loads.
Q4. What capacity ranges are available?
Most single point loadcells range from a few grams to several hundred kilograms.
Q5. Do they require frequent calibration?
Not usually. Once installed correctly, they maintain accuracy for long periods.
Conclusion
Single point loadcells are the backbone of small-scale and retail weighing systems, offering a balance of affordability, precision, and reliability. Whether in packaging lines, labs, or supermarkets, they ensure that measurements are consistent and compliant.